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Finding the Fourth Proportional to 55,121.67, 82,696.39 and 15,678.79

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Solution

The fourth proportional to 55,121.67, 82,696.39 and 15,678.79 is: 23,522.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,121.67 : 82,696.39 = 15,678.79 : x
  2. Step 2: Convert to fraction form
    55,121.67/82,696.39 = 15,678.79/x
  3. Step 3: Cross multiply
    55,121.67x = 82,696.39 × 15,678.79
  4. Step 4: Simplify right side
    55,121.67x = 1,296,579,086.63
  5. Step 5: Solve for x
    x = 1,296,579,086.63/55,121.67
  6. Step 6: Final answer
    x = 23,522.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.